PORTLAND, Ore. (KOIN) — Entercom, the owner of eight radio stations in the Portland area, had data containing personal information from listeners and staff stolen from a car in late February.

As many as 13,000 people are affected.

Officials with Entercom alerted Portland police after the theft happened on February 28 on SE 17th between Burnside and Ankeny.

On that date, they said in a statement on their website, data cartridges with a backup of file server data were inside a backpack that was stolen from an employee’s car. The cartridges, they said, require special hardware and software to read.

An internal investigation found that some of the files had personal information, including Social Security numbers, payment card information and bank account information, from station contestants, clients, vendors and staff.

Local company officials declined a recorded interview with KOIN 6 News.

But in a statement, Kevin Geary, the Entercom Director of Strategic Communications, said:

“This incident was not a system-wide cyber-attack and it was not a breach of our GetMyPerks Ecommerce platform. … It does not appear that the backup cartridges were the target of the theft. To the contrary, we believe that the backpack was the target. …”

On their website, Entercom officials said they’re not aware of any misuse of the information, but they’re providing those affected the chance for free ID theft protection and credit monitoring for one year.